Loss of habitat is to blame, specifically, the lack of the pocket of air between snow and ground called the “subnivean space.” There lemmings winter and give birth to prodigious litters of young.
存环境的缩小是一个原因，更主要的是它们在冰雪和地面之
为“雪
空”里得不到
护，有些旅鼠会在冬天
量惊人却无法存活的小旅鼠。
成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
